diff -ur a/ruby-2.3.4-r4.ebuild b/ruby-2.3.4-r4.ebuild
--- a/ruby-2.3.4-r4.ebuild	2017-09-08 21:57:06.660037586 +0200
+++ b/ruby-2.3.4-r4.ebuild	2017-09-08 21:57:46.079923851 +0200
@@ -88,6 +88,9 @@
 	sed -i -e "s:\(RUBY_LIB_PREFIX=\"\${prefix}/\)lib:\1$(get_libdir):" \
 		configure.in || die "sed failed"
 
+	# Allow user patches to be applied without modifying the ebuild
+        epatch_user
+
 	eautoreconf
 }